Our study of regularity of solutions of (REF ) uses so-called intrinsic scaling techniques.
It was originally developed by DiBenedetto and Friedman in order to prove interior Hölder continuity for the \(p\) -Laplace equation and the porous medium equation, see [1]}.
These techniques are widely used, see for example [2]}, [3]}, [4]} and the references therein.
The key idea of intrinsic scaling is to change the scaling of the aforementioned space-time cylinders in a manner that depends on the solution itself.
Although some technical details are needed, the method allows us to carry over the techniques for non-degenerate parabolic equations to degenerate equations.
